Threshold Ventures
Threshold Ventures is an early-stage venture capital firm based in Menlo Park, California that backs founder-led technology companies at the threshold of breakout growth. Threshold is the 2019 rebrand of Draper Fisher Jurvetson (DFJ), the storied Sand Hill Road firm founded in 1985; managing partners Emily Melton and Josh Stein spun the venture practice into an independent, focused fund. Threshold pursues a high-conviction strategy, concentrating on a small number of Series A and Series B investments and partnering hands-on with founders for the long term, frequently holding board seats through IPO and beyond. The firm invests across enterprise software and SaaS, developer tools and infrastructure, fintech, digital health and healthcare, and AI. Its portfolio has produced 10 unicorns, 3 IPOs, and 17 acquisitions, and includes Box, Twilio, Redfin, Remitly, Doximity, Rippling, LaunchDarkly, Livongo, and Talkdesk. Threshold has invested in roughly 87 companies and raised a ~$250M fund following the rebrand.
Threshold Ventures has 86 portfolio companies tracked on the APIs.io network, of which 32 (37%) publish APIs indexed here. The remaining 54 are tracked as profiles without a published API on the network.
Its highest-rated API providers on the network are Twilio, LaunchDarkly, CircleCI, SugarCRM, Box.
Portfolio on the Network
Portfolio companies that publish APIs indexed on APIs.io, grouped by their API Evangelist rating. Exemplar and Strong are expanded by default.
Exemplar 3 Complete, well-documented, and agent-ready
Developing 17 Usable, with meaningful gaps to close
Emerging 5 Early or largely undocumented
Minimal 1 Almost no public developer surface
Properties
Firm
The firm itself
Cohort brief
Auto-generatedThe 75 portfolio companies with APIs in the catalog, backed by Threshold Ventures, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Access Clarity | 33 | 26.4 | +6.6 | 75 |
| Discoverability | 58.4 | 58.2 | +0.2 | 75 |
| Contract Governance | 6.2 | 6.3 | -0.1 | 75 |
| Contract Quality | 16.9 | 17.6 | -0.7 | 75 |
| Operational Transparency | 12.5 | 13.6 | -1.1 | 75 |
| Developer Ergonomics | 20.8 | 23.1 | -2.3 | 75 |
A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.
| Artifact | This cohort | Catalog | Difference |
|---|---|---|---|
| MCP server (any) | 19% | 15% | +4 |
| MCP server (first-party) | 19% | 12% | +7 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 11% | 11% | 0 |
| Security | 100% | 98% | +2 |
| Arazzo workflows | 3% | 2% | +1 |
| Governance rules | 15% | 13% | +2 |
mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.
- 1 LaunchDarkly 80.8
- 2 Twilio 74.3
- 3 SugarCRM 65
- 4 Box 61.5
- 5 Freshpaint 52.3
- 6 CircleCI 51.2
- 7 Sanity 50.8
- 8 Doximity 50
- 9 FrontApp 49.9
- 10 Ritten 49.7
- 1 Box 58.6
- 2 CircleCI 53.2
- 3 LaunchDarkly 51.9
- 4 Sanity 48.9
- 5 FrontApp 42.8
- 6 Twilio 40.2
- 7 OpsLevel 37.1
- 8 LendKey 36.1
- 9 Doximity 34.7
- 10 Forward Networks 31.6
Coverage caveat. 63 of 75 scored members had under half their catalog-attributable points satisfied at all (catalog_earned / catalog_max < 0.5). They are INCLUDED in the mean above. A large share here means the cohort mean is partly a measurement of how far our enrichment reached, not only of how these providers publish.Generated from the catalog build of 3 October 2026, across 28834 providers, using the same computation served by the APIs.io cohort API. Briefs are published for rosters of 5 or more scored providers; below that a distribution is not meaningful.
Source (apis.yml)
Work with this as data
Every firm here is available over the APIs.io API and to AI agents over MCP.